CN112664237B - Tunnel supporting acting force adjusting device and method - Google Patents
Tunnel supporting acting force adjusting device and method Download PDFInfo
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- CN112664237B CN112664237B CN202011593500.2A CN202011593500A CN112664237B CN 112664237 B CN112664237 B CN 112664237B CN 202011593500 A CN202011593500 A CN 202011593500A CN 112664237 B CN112664237 B CN 112664237B
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims description 41
- 239000011435 rock Substances 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a tunnel supporting acting force adjusting device which comprises a fixed assembly, a movable supporting assembly and a driving assembly, wherein the fixed assembly is connected with profile steel; the movable supporting component is connected with the fixed component and is used for being connected with the tunnel body, and the movable supporting component, the fixed component and the section steel are fixedly connected with the tunnel body in a pouring mode; the driving assembly is detachably connected with the fixing assembly and the movable supporting assembly respectively and is used for adjusting the supporting force of the movable supporting assembly on the tunnel body. The invention also discloses a method for adjusting the supporting acting force of the tunnel, which realizes the fixed-point adjustment of acting force at each position by arranging adjusting devices at different positions of the arch-shaped section steel of the tunnel, thereby forming the optimal supporting force and supporting effect. The invention solves the problems of the prior art that the optimal supporting acting force cannot be formed at each position of the arch section, the supporting effect is not ideal, and the later construction or maintenance process is difficult, thus being suitable for wide popularization.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a device and a method for adjusting acting force of tunnel support.
Background
In the tunnel construction process, steel frames formed by section steel or grid steel are placed in primary supports or secondary linings for supporting in order to strengthen the support rigidity and improve the bearing capacity. The steel frame used for primary support is mostly made of H-shaped, I-shaped and U-shaped steel.
In the steel frame supporting process, supporting acting forces of the steel frame are unevenly distributed due to complexity and uncertainty of surrounding rocks of a tunnel. The existing supporting device cannot form optimal supporting acting force at each position of the arch-shaped section, and often has a bias phenomenon, so that the supporting effect is not ideal, the supporting structure is easy to be unstable, and great difficulty is caused to the later construction or maintenance process.
In view of the above, there is a need to design a device and a method for solving the problem that the prior art cannot form an optimal supporting force at each position of an arch-shaped section, resulting in an unsatisfactory supporting effect and causing great difficulty in the later construction or maintenance process.
Disclosure of Invention
Aiming at the defects, the invention provides a tunnel supporting acting force adjusting device and a tunnel supporting acting force adjusting method, which are used for solving the problems that the prior art cannot form optimal supporting acting force at each position of an arch section, so that the supporting acting effect is not ideal and great difficulty is caused to the later construction or maintenance process.
The invention provides a tunnel supporting acting force adjusting device which is arranged on profile steel at intervals and comprises:
the fixed assembly is connected with the section steel;
the movable supporting component is connected with the fixed component and is used for being connected with the tunnel portal, and the movable supporting component, the fixed component and the section steel are fixedly connected with the tunnel portal in a pouring mode;
the driving assembly is detachably connected with the fixing assembly and the movable supporting assembly respectively and is used for adjusting the supporting force of the movable supporting assembly on the tunnel body.
Preferably, the fixing assembly includes:
the limiting connecting piece is connected with the section steel;
the sleeve is connected with the limit connecting piece and is in sliding connection with the movable supporting component;
and the limiting assembly is respectively connected with the sleeve and the movable supporting assembly and used for fixing the adjusted movable supporting assembly.
Preferably, the moving support assembly includes:
the inner force transmission piece is connected with the sleeve in a sliding way;
and the top plate is connected with the inner force transmission piece and is used for being connected with the tunnel hole body and applying supporting acting force to the tunnel hole body.
Preferably, the limit connector comprises:
the upper limiting piece is connected with the upper surface of the section steel and one end of the sleeve;
and the lower limiting piece is connected with the lower surface of the section steel and the sleeve and used for limiting the sleeve.
Preferably, the driving assembly includes:
the base is detachably connected with the other end of the sleeve;
the power device is arranged on the base, connected with the inner force transmission piece and used for pushing the inner force transmission piece to move.
Preferably, the inner force transmission piece is of a hollow tubular structure, a plurality of positioning holes are formed in the inner force transmission piece at intervals, and the positioning holes are used for being matched with the limiting assembly.
Preferably, the sleeves are provided with four sleeves and are symmetrically arranged on two sides of the section steel, and the inner force transmission pieces are arranged in one-to-one correspondence with the sleeves.
Preferably, a slotted hole is formed in the sleeve, and the limiting assembly fixes the inner force transmission piece through the slotted hole.
The invention also provides a method for adjusting the acting force of the tunnel support, which comprises the following specific steps:
step 5, limiting and fixing the adjusted connecting piece;
and 6, dismantling the jack and the jack fixing frame, grouting the inner power transmission pipe and the hollow sleeve, filling gaps generated between the connecting piece and the upper surface of the I-steel after supporting force adjustment, and simultaneously filling the inner power transmission pipe and the hollow sleeve with grouting.
According to the scheme, the tunnel supporting acting force adjusting device is a reliable and durable force transmission device, is simple in structure, easy to process and low in cost, has certain strength, and can bear load with large weight. The fixing component is used for fixing the movable supporting component and transmitting the reaction force in the process of adjusting the supporting force to the section steel; the movable supporting component is tightly connected with the tunnel body through the pushing force action of the driving component, so that better supporting force is provided for the tunnel body; the supporting acting force is accurately adjusted by adjusting the pushing force of the driving assembly. The invention also provides a tunnel supporting acting force adjusting method, which solves the problems that the supporting acting force is not ideal and causes great difficulty in the later construction or maintenance process due to the fact that the optimal supporting acting force cannot be formed at each position of the arched section in the prior art, has obvious acting effect and is suitable for wide popularization.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a tunnel supporting acting force adjusting device according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a tunnel supporting force adjusting device shown in FIG. 1;
FIG. 3 is a schematic view of the assembled fixed and movable support assemblies of the tunnel-supporting force adjustment device of FIG. 1;
FIG. 4 is a schematic view of the fastening assembly shown in FIG. 3;
FIG. 5 is a schematic view of the movable support assembly of FIG. 3;
fig. 6 is a schematic structural view of an installation effect of a tunnel supporting acting force adjusting device on a section steel with an arch-shaped cross section of a tunnel according to an embodiment of the present invention.
In fig. 1-6:
1. a fixing assembly; 2. a moving support assembly; 3. a drive assembly; 4. section steel; 11. a limit connecting piece; 12. a sleeve; 13. a limit component; 21. an inner force-transmitting member; 22. a top plate; 31. a base; 32. a power device; 111. an upper limit member; 112. a lower limit member; 121. a long slot; 211. and positioning holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 6, a specific embodiment of a tunnel supporting force adjusting device according to the present invention will be described. The tunnel supporting acting force adjusting device is arranged on the section steel 4 at intervals, and can be exemplified by a device which spans the upper part of I20I-steel and transmits load to the I-steel, and comprises a fixed assembly 1, a movable supporting assembly 2 and a driving assembly 3, wherein the fixed assembly 1 is connected with the section steel 4; the movable supporting component 2 is connected with the fixed component 1 and is used for being connected with the tunnel body, and the movable supporting component 2, the fixed component 1 and the section steel 4 are fixedly connected with the tunnel body in a pouring mode; the driving component 3 is detachably connected with the fixed component 1 and the movable supporting component 2 respectively and is used for adjusting the supporting force of the movable supporting component 2 on the tunnel body.
The fixing component 1 is used for fixing the movable supporting component 2 and transmitting the reaction force in the process of adjusting the supporting force to the section steel 4; the movable supporting component 2 is tightly connected with the tunnel body through the pushing force action of the driving component 3, so that better supporting force is provided for the tunnel body; the supporting acting force is accurately adjusted by adjusting the pushing force of the driving assembly 3. It is within the scope of the present disclosure to provide the above-described functions of the fixed assembly 1, the movable support assembly 2, and the driving assembly 3.
Compared with the prior art, the main material of the tunnel supporting acting force adjusting device can be common processed steel, and part of accessories can be adjusted to be stainless steel or other materials according to conditions, so that the tunnel supporting acting force adjusting device is simple in structure, easy to process and low in cost. The tunnel supporting acting force adjusting device is arranged at different positions of the tunnel arch section steel 4 to realize fixed point adjustment of acting force at each position, and the optimal supporting force and supporting effect are formed at the section. The invention solves the problems of the prior art that the optimal supporting acting force can not be formed at each position of the arch section, so that the supporting effect is not ideal, and the later construction or maintenance process is difficult, the acting effect is obvious, and the invention is suitable for wide popularization.
Example 2
As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 6 together, the structure of a tunnel supporting acting force adjusting device provided by the present embodiment is basically the same as that of embodiment 1, except that the fixing component 1 includes a limiting connecting piece 11, a sleeve 12 and a limiting component 13, wherein the limiting connecting piece 11 is connected with the section steel 4; the sleeve 12 is connected with the limit connecting piece 11 and is in sliding connection with the movable supporting component 2; the limiting component 13 is respectively connected with the sleeve 12 and the movable supporting component 2 and is used for fixing the movable supporting component 2 after adjustment. The inner diameter of the sleeve 12 is larger than the outer diameter of the inner force-transmitting member 21, which is beneficial for the inner force-transmitting member 21 to move up and down in the sleeve 12, and a certain space is reserved for the grouting process.
In this embodiment, the limiting connection piece 11 includes an upper limiting piece 111 and a lower limiting piece 112, where the upper limiting piece 111 is connected with the upper surface of the section steel 4 and is connected with one end of the sleeve 12, and an exemplary rectangular plate that is attached to the surface of the section steel 4 and has a round hole for passing the sleeve 12; the lower stopper 112 is connected to the lower surface of the section steel 4 and to the sleeve 12 for stopping the sleeve 12. The limiting component 13 may be a fixture or an anchor, specifically may be an assembly of a limiting pin and a limiting nut, which are used in cooperation, for fixing the inner force transmission member 21 in a later period. The connection part of the limiting connecting piece 11 and the sleeve 12 is provided with an opening, and the sleeve 12 passes through the opening to enable the interior of the sleeve to be communicated with the outside, so that the sleeve is used for mounting and grouting the inner force transmission piece 21.
In this embodiment, the mobile support assembly 2 comprises an inner force-transmitting member 21 and a top plate 22, wherein the inner force-transmitting member 21 is slidingly connected with the sleeve 12; the top plate 22 is connected to the inner force-transmitting member 21 for connection to the tunnel body and for applying a supporting force thereto. The inner force-transmitting member 21 is of a hollow tubular structure, a sufficient flowing space is reserved for subsequent grouting consolidation, an opening for passing through the inner force-transmitting member 21 is formed in the joint of the top plate 22 and the inner force-transmitting member 21, and when grouting, slurry is injected into a gap between the top plate 22 and a tunnel body through the inner force-transmitting member 21 and is filled up. The inner force-transmitting member 21 is provided with a plurality of positioning holes 211 at intervals, and the positioning holes 211 are used for being matched with the limiting assembly 13. The sleeve 12 is provided with four and symmetrically arranged on two sides of the section steel 4, the inner force transmission pieces 21 are arranged in one-to-one correspondence with the sleeve 12, the arrangement stability is better, the stress is more uniform, and the supporting force effect of the top plate 22 on the tunnel is better. The sleeve 12 is provided with a long slot 121, and the limiting component 13 fixes the inner force transmission piece 21 through the long slot 121. It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the fixed assembly 1, the movable supporting assembly 2, and the driving assembly 3 and their constituent components must have specific orientations, be constructed and operated in specific orientations, and thus should not be construed as limiting the present invention.
In this embodiment, the driving assembly 3 includes a base 31 and a power device 32, where the base 31 is detachably connected with the other end of the sleeve 12, and an exemplary embodiment may include a through hole on an upper end surface of the base 31, a thread with a certain distance is disposed at a bottom of the sleeve 12, a diameter of the through hole is larger than an outer diameter of the sleeve 12, the base 31 is sleeved on the sleeve 12 through the through hole, and then the base 31 is fixed by connecting with the sleeve 12 through a nut; the power device 32 is disposed on the base 31 and connected to the inner force-transmitting member 21, for pushing the inner force-transmitting member 21 to move. The power device 32 may be a jack provided with a bearing plate, the bearing plate is connected with the inner force transmission member 21, and the arrangement of the bearing plate makes the force of the inner force transmission member 21 more uniform. During the process of applying pressure to the jack, the inner force transfer piece 21 can move up and down freely, the limiting component 13 does not work temporarily, and only when the jack is removed, the limiting component 13 is locked to work.
Example 3
Referring to fig. 1 to fig. 6 together, a specific embodiment of a method for adjusting a supporting force of a tunnel according to the present invention will now be described, where the specific steps include:
s1, connecting pieces formed by a plurality of groups of movable supporting components 2 and fixed components 1 are arranged on I-steel at equal intervals;
the specific steps of fixing each group of connecting pieces and the I-steel can be as follows:
s1.1, fixedly connecting a fixing assembly 1 with I-steel in a welding way, and installing a limit nut of a limit assembly 13 on a sleeve 12 of the fixing assembly 1;
the specific steps of the fixed assembly 1 and the I-steel fixed connection can be as follows: the upper limit piece 111 and the lower limit piece 112 are fixedly connected with I-steel; by connecting with the upper and lower stoppers 111 and 112, 4 hollow bushings 12 are fixed on both sides of the i-steel.
S1.2, mounting the movable support assembly 2 obtained by combining the top plate 22 and the 4 inner force transfer pieces 21 on the fixed assembly 1, namely inserting the 4 inner force transfer pieces 21 into the corresponding 4 hollow sleeves 12, and contacting the top plate 22 with the upper limiting piece 111 at the moment;
s2, placing an assembly formed by the I-steel and the connecting piece behind a tunnel rock, adjusting the position of the I-steel until the top of the connecting piece is propped against the rock, pouring the assembly to be fixedly connected with the tunnel rock, and reserving a part of the bottom of the connecting piece in air during pouring;
specifically, the assembly formed by the I-steel, the movable supporting component 2 and the fixed component 1 is placed behind a tunnel rock, after the I-steel is adjusted to position the top plate 22 against the rock, the assembly is poured through concrete to be connected and fixed with the tunnel rock, and during pouring, one end, connected with the driving component 3, of the sleeve 12 and the inner force transmission component 21 is reserved with a part in air, and the part is not poured to facilitate the adjustment of the supporting force through the part.
S3, connecting a jack and a jack fixing frame at the bottom of the connecting piece, wherein the jack provides jacking force for the connecting piece;
specifically, the bottom of the sleeve 12 exposed in the air is connected with the base 31, the power devices 32 are fixedly connected to the base 31, and the bearing plate of each group of power devices 32 is connected with the corresponding 4 inner force transmission pieces 21.
S4, starting the jack, driving the inner force transmission pipe of the connecting piece to move up and down in the hollow sleeve of the connecting piece, and adjusting the state of the connecting piece to adjust the supporting force of the connecting piece on the tunnel;
specifically, the power device 32 is started, 4 inner force transmission pieces 21 are driven to move up and down in the hollow sleeve 12 under the action of the pushing force of the power device 32, and when the power device applies pressure to the power device 32, the counterforce is transmitted to the hollow sleeve 12 through the base 31 and then is transmitted to the I-steel.
S5, limiting and fixing the adjusted connecting piece;
specifically, the limiting pin of the limiting component 13 is penetrated into the positioning hole 211 of the inner force transmitting member 21 through the long slot hole 121 of the sleeve 12, the position of the limiting nut is adjusted to fix the limiting pin, and meanwhile, the inner force transmitting member 21 is fixed, so that when the driving component 3 is removed, the inner force transmitting member 21 and the sleeve 12 are prevented from relatively displacing, and the adjusted supporting force cannot be maintained.
S6, removing the jack and the jack fixing frame, grouting the inner force transmission pipe and the hollow sleeve, filling gaps generated between the connecting piece and the upper surface of the I-steel after supporting force adjustment, and grouting the inner force transmission pipe and the hollow sleeve.
Specifically, the driving assembly 3 is removed, grouting is carried out on the hollow inner force transmission piece 21 and the sleeve 12, gaps generated between the top plate 22 and the upper surface of the I-steel after supporting force adjustment are filled, grouting is carried out on the inner force transmission piece 21 and the sleeve 12, and the strength of the inner force transmission piece 21 and the sleeve 12 is increased, and meanwhile the inner force transmission piece and the sleeve 12 are fixed.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. Tunnel supporting acting force adjusting device, the interval sets up on shaped steel (4), its characterized in that includes:
the fixing assembly (1) is connected with the section steel (4);
the movable supporting component (2) is connected with the fixed component (1) and is used for being connected with the tunnel body, and the movable supporting component (2), the fixed component (1) and the section steel (4) are fixedly connected with the tunnel body in a pouring mode;
the driving assembly (3) is detachably connected with the fixed assembly (1) and the movable supporting assembly (2) respectively and is used for adjusting the supporting force of the movable supporting assembly (2) on the tunnel body;
the fixing assembly (1) comprises:
the limiting connecting piece (11) is connected with the section steel (4);
the sleeve (12) is connected with the limit connecting piece (11) and is in sliding connection with the movable supporting component (2);
the limiting assembly (13) is respectively connected with the sleeve (12) and the movable supporting assembly (2) and is used for fixing the adjusted movable supporting assembly (2);
the mobile support assembly (2) comprises:
an inner force transmission piece (21) which is connected with the sleeve (12) in a sliding way;
the top plate (22) is connected with the inner force transmission piece (21) and is used for being connected with the tunnel hole body and applying supporting acting force to the tunnel hole body;
the drive assembly (3) is configured to drive the inner force-transmitting member (21) up and down within the sleeve (12) upon actuation.
2. A tunnel supporting force adjustment device according to claim 1, characterized in that the limit connection (11) comprises:
an upper limit piece (111) connected with the upper surface of the section steel (4) and connected with one end of the sleeve (12);
and the lower limiting piece (112) is connected with the lower surface of the profile steel (4) and the sleeve (12) and is used for limiting the sleeve (12).
3. A tunnel supporting force adjustment device according to claim 2, characterized in that the drive assembly (3) comprises:
the base (31) is detachably connected with the other end of the sleeve (12);
and the power device (32) is arranged on the base (31) and connected with the inner force transmission piece (21) and is used for pushing the inner force transmission piece (21) to move.
4. A tunnel supporting force adjusting device according to claim 3, wherein the inner force transmitting member (21) is of a hollow tubular structure, a plurality of positioning holes (211) are formed in the inner force transmitting member (21) at intervals, and the positioning holes (211) are used for being matched with the limiting assembly (13).
5. The tunnel supporting acting force adjusting device according to claim 4, wherein the sleeves (12) are provided with four symmetrically arranged on two sides of the section steel (4), and the inner force transmitting members (21) are arranged in one-to-one correspondence with the sleeves (12).
6. The tunnel supporting acting force adjusting device according to claim 5, wherein the sleeve (12) is provided with a slotted hole (121), and the limiting assembly (13) fixes the inner force transmitting piece (21) through the slotted hole (121).
7. A method of adjusting a tunnel support force adjustment device according to claim 6, comprising the specific steps of:
step 1, connecting pieces formed by a plurality of groups of movable supporting components (2) and fixed components (1) are arranged on profile steel at equal intervals;
step 2, placing an assembly formed by profile steel, the movable supporting component (2) and the fixed component (1) behind a tunnel rock, adjusting the position of the profile steel to prop a top plate (22) against the rock, pouring the assembly through concrete to be connected and fixed with the tunnel rock, and reserving a part of one end, connected with a sleeve (12), an inner force transmission component (21) and a driving component (3), of the sleeve in air when pouring, wherein the part is not poured so as to be convenient for adjusting supporting force through the part;
step 3, connecting a base (31) at the bottom of a sleeve (12) exposed in the air, fixedly connecting a power device (32) on the base (31), and connecting the bearing plates of each group of power devices (32) with the corresponding 4 inner force transmission pieces (21);
step 4, starting the power device (32), driving 4 inner force transfer pieces (21) to move up and down in the sleeve (12) under the action of the pushing force of the power device (32), and transmitting counter force to the sleeve (12) through the base (31) and then to the profile steel when the power device (32) applies pressure;
step 5, penetrating a limiting pin of the limiting assembly (13) into a positioning hole (211) of the inner force transmission member (21) through a long groove hole (121) of the sleeve (12), adjusting the position of a limiting nut to fix the limiting pin, and simultaneously realizing the fixation of the inner force transmission member (21), so that the problem that the adjusted supporting force cannot be maintained due to the relative displacement of the inner force transmission member (21) and the sleeve (12) when the driving assembly (3) is removed is avoided;
and 6, removing the driving assembly (3), grouting the hollow inner force transmission piece (21) and the sleeve (12), filling gaps generated between the top plate (22) and the upper surface of the section steel after adjusting the supporting force, grouting the inner force transmission piece (21) and the sleeve (12), and fixing the inner force transmission piece (21) and the sleeve (12) while increasing the strength of the inner force transmission piece and the sleeve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593500.2A CN112664237B (en) | 2020-12-29 | 2020-12-29 | Tunnel supporting acting force adjusting device and method |
| US17/766,177 US20240052744A1 (en) | 2020-12-29 | 2021-05-08 | A device and method for adjusting tunnel support force |
| PCT/CN2021/092408 WO2022142051A1 (en) | 2020-12-29 | 2021-05-08 | Tunnel supporting action force adjustment device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011593500.2A CN112664237B (en) | 2020-12-29 | 2020-12-29 | Tunnel supporting acting force adjusting device and method |
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| Publication Number | Publication Date |
|---|---|
| CN112664237A CN112664237A (en) | 2021-04-16 |
| CN112664237B true CN112664237B (en) | 2023-06-02 |
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| CN202011593500.2A Active CN112664237B (en) | 2020-12-29 | 2020-12-29 | Tunnel supporting acting force adjusting device and method |
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| Country | Link |
|---|---|
| US (1) | US20240052744A1 (en) |
| CN (1) | CN112664237B (en) |
| WO (1) | WO2022142051A1 (en) |
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| CN112664237B (en) * | 2020-12-29 | 2023-06-02 | 宁波朗达工程科技有限公司 | Tunnel supporting acting force adjusting device and method |
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| GB8331638D0 (en) * | 1983-11-26 | 1984-01-04 | Cirtemetric Ltd | Yieldable stilt |
| JP3933296B2 (en) * | 1998-03-31 | 2007-06-20 | 株式会社クボタ | Tunnel segment connection |
| CN105971025B (en) * | 2016-05-16 | 2018-03-16 | 浙江大学 | Counterforce device and method for the oblique cone penetration test of tunnel internal |
| CN207829932U (en) * | 2017-01-05 | 2018-09-07 | 中铁工程设计咨询集团有限公司 | A kind of supporting arrangement for Tunnel structure |
| CN107060812A (en) * | 2017-07-04 | 2017-08-18 | 北京军秀咨询有限公司 | A kind of constructing tunnel excavating device and method |
| CN108150200A (en) * | 2018-01-18 | 2018-06-12 | 西南石油大学 | A kind of support of tunnel arch and application method |
| CN212003215U (en) * | 2020-03-10 | 2020-11-24 | 中南大学 | Tunnel lock foot steel pipe initiative bearing system |
| CN111764936A (en) * | 2020-07-08 | 2020-10-13 | 中铁二十局集团有限公司 | Plugging and reinforcing device for lining end die |
| CN112664237B (en) * | 2020-12-29 | 2023-06-02 | 宁波朗达工程科技有限公司 | Tunnel supporting acting force adjusting device and method |
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2020
- 2020-12-29 CN CN202011593500.2A patent/CN112664237B/en active Active
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2021
- 2021-05-08 WO PCT/CN2021/092408 patent/WO2022142051A1/en active Application Filing
- 2021-05-08 US US17/766,177 patent/US20240052744A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN112664237A (en) | 2021-04-16 |
| US20240052744A1 (en) | 2024-02-15 |
| WO2022142051A1 (en) | 2022-07-07 |
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